C++ (Cpp) RSA_private_transform示例

示例#1

文件： rsa_impl.c 项目： RobinWuDev/Qt

static int decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
                   const uint8_t *in, size_t in_len, int padding) {
  const unsigned rsa_size = RSA_size(rsa);
  int r = -1;
  uint8_t *buf = NULL;
  int ret = 0;

  if (max_out < rsa_size) {
    OPENSSL_PUT_ERROR(RSA, decrypt, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
    return 0;
  }

  buf = OPENSSL_malloc(rsa_size);
  if (buf == NULL) {
    OPENSSL_PUT_ERROR(RSA, decrypt, ERR_R_MALLOC_FAILURE);
    goto err;
  }

  if (in_len != rsa_size) {
    OPENSSL_PUT_ERROR(RSA, decrypt, RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN);
    goto err;
  }

  if (!RSA_private_transform(rsa, buf, in, rsa_size)) {
    OPENSSL_PUT_ERROR(RSA, decrypt, ERR_R_INTERNAL_ERROR);
    goto err;
  }

  switch (padding) {
    case RSA_PKCS1_PADDING:
      r = RSA_padding_check_PKCS1_type_2(out, rsa_size, buf, rsa_size);
      break;
    case RSA_PKCS1_OAEP_PADDING:
      /* Use the default parameters: SHA-1 for both hashes and no label. */
      r = RSA_padding_check_PKCS1_OAEP_mgf1(out, rsa_size, buf, rsa_size,
                                            NULL, 0, NULL, NULL);
      break;
    case RSA_NO_PADDING:
      r = RSA_padding_check_none(out, rsa_size, buf, rsa_size);
      break;
    default:
      OPENSSL_PUT_ERROR(RSA, decrypt, RSA_R_UNKNOWN_PADDING_TYPE);
      goto err;
  }

  if (r < 0) {
    OPENSSL_PUT_ERROR(RSA, decrypt, RSA_R_PADDING_CHECK_FAILED);
  } else {
    *out_len = r;
    ret = 1;
  }

err:
  if (buf != NULL) {
    OPENSSL_cleanse(buf, rsa_size);
    OPENSSL_free(buf);
  }

  return ret;
}

示例#2

文件： rsa_impl.c 项目： caiolima/webkit

/* signing */
int rsa_default_sign_raw(RSA *rsa, size_t *out_len, uint8_t *out,
                         size_t max_out, const uint8_t *in, size_t in_len,
                         int padding) {
  const unsigned rsa_size = RSA_size(rsa);
  uint8_t *buf = NULL;
  int i, ret = 0;

  if (max_out < rsa_size) {
    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
    return 0;
  }

  buf = OPENSSL_malloc(rsa_size);
  if (buf == NULL) {
    OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
    goto err;
  }

  switch (padding) {
    case RSA_PKCS1_PADDING:
      i = RSA_padding_add_PKCS1_type_1(buf, rsa_size, in, in_len);
      break;
    case RSA_NO_PADDING:
      i = RSA_padding_add_none(buf, rsa_size, in, in_len);
      break;
    default:
      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
      goto err;
  }

  if (i <= 0) {
    goto err;
  }

  if (!RSA_private_transform(rsa, out, buf, rsa_size)) {
    goto err;
  }

  *out_len = rsa_size;
  ret = 1;

err:
  if (buf != NULL) {
    OPENSSL_cleanse(buf, rsa_size);
    OPENSSL_free(buf);
  }

  return ret;
}

示例#3

文件： my_engine.c 项目： luocn99/ssl

static int my_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
                   const uint8_t *in, size_t in_len, int padding) {
  const unsigned rsa_size = RSA_size(rsa);
  int r = -1;
  uint8_t *buf = NULL;
  int ret = 0;

  printf("my decrypt, file:%s line:%d \n", __FILE__, __LINE__);

  if (max_out < rsa_size) {
    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
    return 0;
  }

  if (padding == RSA_NO_PADDING) {
    buf = out;
  } else {
    /* Allocate a temporary buffer to hold the padded plaintext. */
    buf = OPENSSL_malloc(rsa_size);
    if (buf == NULL) {
      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
      goto err;
    }
  }

  if (in_len != rsa_size) {
    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN);
    goto err;
  }

  printf("my decrypt, file:%s line:%d \n", __FILE__, __LINE__);
  if (!RSA_private_transform(rsa, buf, in, rsa_size)) {
    goto err;
  }
  printf("my decrypt, file:%s line:%d \n", __FILE__, __LINE__);

  switch (padding) {
    case RSA_PKCS1_PADDING:
      r = RSA_padding_check_PKCS1_type_2(out, rsa_size, buf, rsa_size);
      break;
    case RSA_PKCS1_OAEP_PADDING:
      /* Use the default parameters: SHA-1 for both hashes and no label. */
      r = RSA_padding_check_PKCS1_OAEP_mgf1(out, rsa_size, buf, rsa_size,
                                            NULL, 0, NULL, NULL);
      break;
    case RSA_NO_PADDING:
      r = rsa_size;
      break;
    default:
      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
      goto err;
  }
  printf("my decrypt, file:%s line:%d \n", __FILE__, __LINE__);

  if (r < 0) {
    OPENSSL_PUT_ERROR(RSA, RSA_R_PADDING_CHECK_FAILED);
  } else {
    *out_len = r;
    ret = 1;
  }

err:
  if (padding != RSA_NO_PADDING && buf != NULL) {
    OPENSSL_cleanse(buf, rsa_size);
    OPENSSL_free(buf);
  }

  return ret;
}

示例#4

文件： rsa_impl.c 项目： MateusDeSousa/FiqueRico

int rsa_default_decrypt(RSA *rsa, size_t *out_len, uint8_t *out, size_t max_out,
                        const uint8_t *in, size_t in_len, int padding) {
  const unsigned rsa_size = RSA_size(rsa);
  uint8_t *buf = NULL;
  int ret = 0;

  if (max_out < rsa_size) {
    OPENSSL_PUT_ERROR(RSA, RSA_R_OUTPUT_BUFFER_TOO_SMALL);
    return 0;
  }

  if (padding == RSA_NO_PADDING) {
    buf = out;
  } else {
    // Allocate a temporary buffer to hold the padded plaintext.
    buf = OPENSSL_malloc(rsa_size);
    if (buf == NULL) {
      OPENSSL_PUT_ERROR(RSA, ERR_R_MALLOC_FAILURE);
      goto err;
    }
  }

  if (in_len != rsa_size) {
    OPENSSL_PUT_ERROR(RSA, RSA_R_DATA_LEN_NOT_EQUAL_TO_MOD_LEN);
    goto err;
  }

  if (!RSA_private_transform(rsa, buf, in, rsa_size)) {
    goto err;
  }

  switch (padding) {
    case RSA_PKCS1_PADDING:
      ret =
          RSA_padding_check_PKCS1_type_2(out, out_len, rsa_size, buf, rsa_size);
      break;
    case RSA_PKCS1_OAEP_PADDING:
      // Use the default parameters: SHA-1 for both hashes and no label.
      ret = RSA_padding_check_PKCS1_OAEP_mgf1(out, out_len, rsa_size, buf,
                                              rsa_size, NULL, 0, NULL, NULL);
      break;
    case RSA_NO_PADDING:
      *out_len = rsa_size;
      ret = 1;
      break;
    default:
      OPENSSL_PUT_ERROR(RSA, RSA_R_UNKNOWN_PADDING_TYPE);
      goto err;
  }

  if (!ret) {
    OPENSSL_PUT_ERROR(RSA, RSA_R_PADDING_CHECK_FAILED);
  }

err:
  if (padding != RSA_NO_PADDING) {
    OPENSSL_free(buf);
  }

  return ret;
}